Stormwater Management

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Stormwater Management

Springfield City Council Luncheon July 7, 2009
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Todays Stormwater Management
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Water is Life Infrastructure Makes it Happen
(From WEF)

• 80 of the earth's surface is water
• 97 of the earth's water is seawater
• 1 of the earth's water is available for drinking
  
• We can live a month without food but only a week
  without water .

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The Changing Face ofStorm Water Management
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Best Management Practices
Water Quality Detention
Bio-Engineered Structure Boulder Drop Structure
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Working Together to Enhance Water Quality
Quality of Life
Breaking Flooding Cycle (3M CF of Detention
Storage)
17.5-inches of Rainfall September 93 (Average
Annual is 40-inches)
Water Quality Basin Detention Creates
Neighborhood Greenspace
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Floodplain Acquisitions

• Flood-Prone Residential Structures
• Undeveloped Floodplains, Sinkhole Property,
  Riparian Corridors
• Converted to Greenspace, which provides for Flood
  Protection, Recreational, Environmental
  Opportunities.

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Voluntary Floodplain Acquisition Program

• Initiated in 1994 in response to 1993 floods
  Ferguson Sinkhole
• Endorsed by the Citizens Stormwater Committee
  To Break the Flooding Cycle
• Acquired 150 flood-prone residential properties
• Acquired 200 acres of valuable riparian corridor
  along major streams
• Working with Ozark Greenways Parks to use
  riparian corridors for flood protection, water
  quality benefits, open space, recreational uses,
  wildlife habitat, greenway trails (Galloway
  Trail, South Creek Trail, Jordan Creek Trail, etc)

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Riparian Corridors Connect Neighborhoods Parks
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Meeting Federal Clean Water Requirements

• Completed 5-year Phase 1 Permit July 2007
• Primary Activities
• Stream Sampling Biological Assessments
• Field Screening Storm Water Sampling
• Illicit discharge investigation enforcement
• BMPs on new developments
• Public education involvement
• Mapping of the MS4 (Inventory)
• Cleaning Maintenance
• Roadway BMPs
• Water quality retrofitting (Projects)
• Pesticides, herbicides, and fertilizers
• Control of industrial high risk runoff
• Construction site runoff
• Annual Report - Annual Hard Cost of 300k
  www.springfieldmo.gov/stormwater

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Manual Rain Gauge
Automatic Rain Gauge (Real Time -15min)
Grab Sample
Automatic Sampler
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EPA Stormwater Program Audit

• EPA Auditing All NPDES MS4 Phase I Cities Most
  in Region 7 Have Been Completed
• EPA Audit of Springfield MS4 Phase 1 Stormwater
  Program - August 28 - 30, 2007
• Consultant, SAIC -2, EPA-1, DNR-1
• Reviewed Permits, Ordinances, Standards, Forms,
  Reports Related to Stormwater Program
• Conducted Inspections of Industrial Sites,
  Construction Sites, Municipal Facilities
• Very Positive Feedback on Our Program, Documented
  Several Requirements and Recommendations

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NPDES Audit RequirementErosion Sediment Control
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New Land Disturbance Activity Ordinance

• Adopted by City Council-Dec. 15, 2008
• Requires City Land Disturbance Permit for all
  land disturbance activity affecting 1 acre or
  more, or if the activity is within 25 feet of a
  sensitive natural resource.
• Permit program will enable the City to implement
  a database to inventory and prioritize all
  construction sites disturbing one or more acres.

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Daylighting of Jordan Creek
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Jordan Creek North Branch Daylighting Project
Phase 1- National to Prospect
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Jordan Creek Daylighting Project
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Jordan Creek North Branch Daylighting Project
Phase 1
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Jordan Creek North Branch Daylighting Project
Phase 2
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Jordan Creek North Branch Daylighting Project
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Jordan Creek Daylighting Project
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Sustainable Detention Basin
Missouri State University Detention/Open Space
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Fassnight Park/Creek Improvements
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Fassnight Park/Creek Improvements
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Fassnight Park/Creek Improvements
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Fassnight Park/Creek Improvements
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• Low Impact Development
• What is it? A method of development that seeks
  to match post-development runoff characteristics
  to pre-development characteristics peak flow
  rate, timing of runoff, volume of runoff,
  infiltration, pollutant loads.
• Various methods to re-establish or mimic the
  absorption characteristics of the site prior to
  development pervious pavement, bio-retention,
  infiltration pits, green roofs, rainwater
  recapture, rain gardens, rain barrels.

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PD 330
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• Rain Gardens
• Increases the amount of water that filters into
  the ground, which recharges area aquifers
• Helps protect downstream properties from flooding
  drainage problems
• Helps protect streams lakes from pollutants
  carried by urban storm water fertilizers
  pesticides, oil other fluids that leak from
  vehicles, and other pollutants that wash off
  roofs paved areas
• Enhances the attractiveness of yards
  neighborhoods and
• Provides valuable habitat for birds, butterflies,
  and beneficial insects.

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Library Center JRBP MDC
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Planted Maintained by Homeowners 31 Runoff
Reduction - 1 Rainfall
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First Unitarian Universalist Church
Project by JRBP, Public Works Community
Foundation of the Ozarks Stewardship Ozarks
Grant Planted Maintained by Church 26 Runoff
Reduction - 1 Rainfall
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Community Foundation of the Ozarks
Project by JRBP, Public Works MDC Funded by
Community Foundation of the Ozarks
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Horace Mann Elementary
Project by JRBP Funding Rotary Club, Storm
Water Services Horace Mann PTA Planted
Maintained by PTA
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Rain Water Harvesting System South Horseshoe
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Test Site in Madison, WI
Evapotranspiration
Volume In
Datalogger
Soil Moisture
Pond Depth
Volume Out
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Meeting Federal Clean Water Requirements
Rain Barrels -OVER 500 SOLD IN GREENE COUNTY!

• Partnership with James River Basin Partnership
• Booths at Home and Garden Shows
• JRBP offers individual barrels for 75 (Wickmans)
• JRBP offers double barrels w/kit for 90
  (Habitat)
• 25 Rebate per barrel provided by Public Works,
  Greene County Resource Management, City Utilities

• Sold 500 in Greene County in two years
• Goal to sell 1000 in 2009
• Have sold over 300 this year
• Running PSA on KOLR10 (see web page)
• Downspout Disconnection Program

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Other Infiltration Methods
3.5 inches of rain in 24 hrs
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Grass Buffers and Swales
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Pervious Pavement Best of Times
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Pervious Pavement Worst of Times
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LEED, LID Stormwater Design Standards

• Revised Manual Embraces LID
• Better Planning Respect Waterways
• Better Detention Designs
• Greener Channels Preserving Natural Channels
• Water Quality Protection Features
• Retention
• Rain Gardens
• Pervious Pavement
• Grass Swales Buffers

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Development Examples
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Capital Funding For Stormwater

• Unfunded Needs
• Existing System gt 500 Miles
• Many Structures gt 50 Years Old
• Over 2500 Requests for Service
• Needed Projects Estimated at 700M

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Capital Funding For Stormwater
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TYPICAL STORMWATER PROGRAM FEATURES Reference
Debo Reese, 1995, Municipal Stormwater
Management, Lewis Publishers
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WWEs Overall AssessmentSpringfields program
is solidly beyond MODERATE (Level 3) and contains
many elements in the ADVANCED category (Level 4)
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To Fully Attain Level 4, City Needs to

• Highest Priority Increase permanent funding for
  system maintenance, staffing, administration and
  operations
• Initiate targeted watershed planning
• Prepare drainage criteria manual (COMPLETED)
• Obtain authority to require grading plan in
  development submittal process (COMPLETED)

• Implement Pierson Creek, South Dry Sac sinkhole
  water quality requirements citywide (COMPLETED)
• Successfully administer and comply with the MS4
  permit (COMPLETED)
• Increase public education/involvement (Ongoing)

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To Fully Attain Level 5, City Needs to

• Do everything listed above regarding attainment
  of Level 4
• Continue to improve water quality, especially in
  the James River Basin
• Continue to prepare detailed flood hazard maps
• Evaluate and following a screening process,
  propose a permanent funding source for the
  stormwater program, potentially in combination
  with Greene County. This would likely be a
  stormwater utility.
• Implement pilot projects regarding new stormwater
  and stream channel management practices, such as
  LID and bioengineering for stream channel
  stability (Ongoing)

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To Fully Attain Level 5, City Needs to
(continued)

• Continue to acquire flood-prone buildings and
  preserve appropriate riparian corridors (Ongoing)
• Encourage multi-purpose facilities that are
  valuable community assets, like the Y detention
  basin, including partnerships to create such
  facilities (Ongoing)
• Adopt a more proactive approach to erosion
  control at construction sites, emphasizing
  education (COMPLETED Ongoing)
• Increase public education and involvement, in
  general (Ongoing)

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Water Quality - Quality of Life- Economic
Development
In the Ozarks, quality of life is tied to
quality of water, is tied to economic
development. If we lose one, we risk losing
all. - Todd Parnell, 2004
Chairman, Springfield Chamber of
Commerce
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For More Informationwww.springfieldmo.gov/storm
water